Open AccessThe influence of the thermal modification of pine ( Pinus sylvestris L.) wood on the creation of fine dust particles in plane milling
Author(s) -
Piernik Magdalena,
Rogoziński Tomasz,
Krauss Andrzej,
Pinkowski Grzegorz
Publication year - 2019
Publication title -
journal of occupational health
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.664
H-Index - 59
ISSN - 1348-9585
DOI - 10.1002/1348-9585.12075
Subject(s) - scots pine , pinus <genus> , materials science , particle (ecology) , particle size distribution , composite material , particle size , thermal , ultrafine particle , machining , chemical engineering , metallurgy , nanotechnology , botany , physics , engineering , geology , oceanography , meteorology , biology
Objectives The aim of the study was to determine the effect of parameters of the thermal modification process and machining on the size distribution of dust particles of Scots pine ( Pinus sylvestris L.) generated during lengthwise milling. Method Unmodified wood and thermally modified wood at temperatures of 130, 160, 190, and 220°C were milled lengthwise at cutting depths of 0.5 and 2 mm. Particle size analysis was done using the sieving method. The content of the finest particles was measured using the laser diffraction method. Results The results indicate that at smaller cutting depths, more smaller particles were formed regardless of the wood modification temperature. Thermal treatment of wood does not cause significant differences in the general particle size distribution of dust. However, the content of the finest dust particles depends on the temperature of wood modification. When machined, wood thermally modified at higher temperatures results in the formation of more dust particles that may pose health risks to employees. This is particularly noticeable at a smaller cutting depth. Conclusion With the increase of the temperature of the modification, the share of the finest dust particles, which are a potential threat to the health of employees, increases. To reduce dust emissions during milling of thermally modified wood, the highest possible cutting depth should be used.